The stone is virtually maintenance free and requires no special finish to protect it, however it does need to be protected from water. In the event of remodeling, if excessive dust has accumulated on the product, use an air compressor to remove the dust or dry cloth if minor accumulation of dust occurs. Stone should be cleaned with a dry cloth once a year to enhance the shine. Do NOT use any polish or chemicals. If further maintenance is needed please contact the customer service department to request a maintenance instruction guide.